I agree completely. It’s hard for us to imagine seeing it break up but there is nothing that prevents that except our general desire to live together.

I think large democracies with functioning governments are very unstable over long time horizons. The reason I mention functioning is that if the government of a large democracy is largely non-functional than you can mostly keep doing whatever you want with whatever cultural norms you have where you live. But a functional one will actually pass laws and actually enact things that affect your life that you may disagree with - look at the current abortion stuff. There is no reconciliation to be had on many of these issues. Or look at the Republicans rhetoric around the debt limit “they’ll have to do it without us” - yikes.

The US has lasted as long as it has because for most of the time the country was somewhat homogenous and where it wasn’t you could “go fuck off into the woods” and nobody would bother you. With that being less of a possibility the country was always on a collision course for instability, but WW2 and the Cold War kept people united around a common enemy that threatened basically held beliefs. With that gone we will either have a new uniting enemy, or we’ll eventually just form some different governments.